1. Using less energy helps us save money and conserve the enivroment.

2. I suggest that different kinds of waste should be put in different places.

3. The world's energy resources are limited so we should use them economically.

4. You should reduce the amount of electricity your family uses.

5. I think we should turn off all the lights and fans before leaving the room.

6. It's time to do something to prevent wasting energy.

7. Why don't we have a plumber check the water pipes in the home?

8. My friend gave me advice on how to save energy.

9. In order to save electricity an ordinary 100-watt light bulb can be replaced by an energy-saving bulb.

10. Solar energy can be easily used in tropical countries.